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The RC7AFF1TC Series Poke-Thru Devices are UL Listed and Classified to U.S. and Canadian safety
standards to the following conditions:
The RC7AFF1TC factory assembled poke-thru devices are for use with 1, 1-1/2-, 2 hour rated unprotected reinforced concrete
floors and 1, 1-1/2-, or 2 hour rated floors employing unprotected steel floor units and concrete topping (D900-Series Designs),
or concrete floors with suspended ceilings. (Fire resistive designs with suspended ceilings should have provisions for accessibility
in the ceiling area below the poke thru fittings).
The assembled poke-thru stem and service fitting will not reduce the ratings of the floor assembly when the thickness and type of
concrete (required for the specific rating) are within the specified limits and the fittings are installed as specified:
1. – Spacing – Minimum of 2 ft OC and not more than 1 unit per 65 sq ft of floor area in each span.
2. – Concrete – Minimum thickness of structural concrete topping of 2-1/4 in. over metal deck or a minimum
3 in. thick reinforced concrete slab. Unit weight of concrete to be 110 to 155 pcf.
3. – Installation – Mounted in a 3 in. diameter core-drilled hole in concrete per installation instructions
accompanying the fittings or abandonment fittings. For use with power circuits, date and/or maximum
25 pair size telephone cables as tabulated below:
The “TC” suffix letters indicate that device may be installed on tile or carpet covered concrete floors. The “LJB” suffix
letters indicate units supplied with a compression type EMT fitting.
(a) Maximum number of No. 12 AWG Type THHN conductors in power compartment of poke-thru fitting.
(b) Maximum number of 22 AWG conductors in low-voltage compartment of poke-thru fitting (4 pair cables have
8 conductors, 25 pair cables have 50 conductors). When conductors larger than No. 22 AWG are used, the
aggregate cross-sectional area of the copper conductors shall not exceed the aggregate cross-sectional area
of the 22 AWG conductors permitted in the low-voltage compartment.
FLOOR COVERINGS: The poke-thru device is fire rated for carpet or wood covered floors, tile floor coverings
up to 3/4” [19.1 mm] maximum thickness, and linoleum floor coverings up to a maximum 1/8” [3.2 mm] thickness.
For other floor coverings not listed above, consult factory.
Size Solid
#24 .00032 sq. in. [.20645mm
2
]
#22 .00050 sq. in. [.32258mm
2
]
#14 .00323 sq. in. [2.08386mm
2
]
#12 .00512 sq. in. [3.30321mm
2
]
#10 .00815 sq. in. [5.25805mm
2
]
# 8 .01296 sq. in. [8.36127mm
2
]
COPPER CROSS SECTIONAL AREA
OF COMMONLY USED CONDUCTORS
NOTE: Use above values for solid or stranded conductors.
RC7AFF1TC (Power only) 15 (.07680 sq in.) [49.548mm
2
]–
RC7AFF1TC (Communication only) – 152 (.07600sq. in.) [49.032mm
2
]
POKE-THRU POWER COMMUNICATION
FITTING TYPE CONDUCTORS (A) CONDUCTORS (B)
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